need help getting Box specs for a MA Kore 15" 1.5 ohm Qvc
06-07-2010, 08:39 PM
#1
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Thread Starter
Join Date: Jun 2010
Posts: 5
need help getting Box specs for a MA Kore 15" 1.5 ohm Qvc
I am trying to build a custom box for a sub I picked up its a MA KORE 15" 1.5 ohm qvc. i want to make a dual slot ported box but i have no specs on the MA Kore and i cant find any.. if anyone can help me out it would be greatly appreciated!!!
Last edited by th3420; 06-07-2010 at 09:15 PM.
06-14-2010, 12:14 AM
#2
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Join Date: May 2010
Posts: 35
Fo (Hz) 33
QMS 4.98
QES 0.87
QTS 0.82
VAS (Liters) 28.76
REVC (Ohms) 5.2 (series)
SPL @ 1 watt / 1 meter (dB) 88.9
X-max Linear pk-pk (mm) 28
LEVC at 1k Hz (mH) 1.9
ENCLOSURE VOLUME'S SEALED
Minimum sealed (Cu. Ft) 1.75
Fill Required (%) No
3dB down point (-3dB Hz) 41
Maximum sealed (Cu. Ft) 2.5
Fill Required (%) No
3dB down point (-3dB Hz) 38
ENCLOSURE VOLUME'S PORTED
7 ftcu.
PORT SIZE 15 x 5 x 11.75
tune to fit application custom 42 HZ decrease legnth to raise freq.
SEALED 3 ftcu.
Thats for the 18.. I have two of those in a 12ft^3 box @ 37hz and can do 143.8db at about 1800w RMS.
Just size your box down about 10% or so from recommended for the 18, or somewhere close to there. Smaller boxes are bit better for power handling and a single port is simpler usually. Minimum 10 square inches of port area per cubic foot of box volume, 12-15 is generally better.
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